Help anyone I’m stuck on this

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.